Final answer:
Keck Industries will pay approximately $1,761,799.49 in interest over the life of the bonds.
Step-by-step explanation:
To calculate how much Keck Industries will pay in interest over the life of the bonds, we can use the formula for calculating compound interest. The formula is: Interest = Principal x (1 + rate)^time - Principal
In this case, the Principal is $7 million, the rate is 5.4% (or 0.054), and the time is 6 years. Plugging these values into the formula, we get: Interest = $7,000,000 x (1 + 0.054)^6 - $7,000,000
Calculating this expression, we find that Keck Industries will pay approximately $1,761,799.49 in interest over the life of the bonds.